Siemens offers a wide range of industrial automation products, including PLCs, HMIs, servo systems, variable frequency drives, industrial communication equipment, and power supplies. For engineers and purchasing managers, understanding the Siemens product family structure can simplify product selection and maintenance.
This guide provides an overview of the major Siemens product categories and explains the most common model numbering conventions.
2. Siemens PLC Product Families
PLC Overview Table
| Family |
Typical Prefix |
Description |
| S7-200 SMART |
6ES7288 |
Compact PLC |
| S7-1200 |
6ES721x |
Modular PLC |
| S7-300 |
6ES731x |
Medium-scale PLC |
| S7-1500 |
6ES751x |
High-performance PLC |
| Prefix |
Function |
| 6ES721x |
CPU Modules |
| 6ES722x |
Digital I/O |
| 6ES723x |
Analog/Communication Modules |
Common models：
- 6ES7214-1AG40-0XB0
- 6ES7215-1AG40-0XB0
- 6ES7223-1BL32-0XB0
| Prefix |
Function |
| 6ES731x |
CPU |
| 6ES732x |
Digital I/O |
| 6ES733x |
Analog I/O |
| 6GK7343 |
Communication Processor |
| Prefix |
Function |
| 6ES751x |
CPU |
| 6ES752x |
Digital I/O |
| 6ES753x |
Analog I/O |
| 6ES754x |
Communication Modules |
| 6ES755x |
Technology Modules |
| 6GK7543 |
Communication Processor |
3. Siemens HMI Products
| Family |
Description |
| KTP Series |
Basic Panels |
| TP Series |
Comfort Panels |
Common models：
- KTP700 Basic
- KTP1200 Basic
- TP700 Comfort
- TP1200 Comfort
4. Siemens LOGO! Controllers
| Family |
Description |
| LOGO! |
Micro PLC / Smart Relay |
application：
- Building Automation
- Pump Control
- Lighting Control
- Small Machines
5. Siemens Low Voltage Control Products
| Series |
Product |
| 3RT |
Contactor |
| 3RH |
Auxiliary Relay |
| 3RV |
Motor Protection Circuit Breaker |
| 3RU |
Overload Relay |
6. Siemens Circuit Protection Products
| Series |
Product |
| 5SY |
Miniature Circuit Breaker |
| 3VT |
Molded Case Circuit Breaker |
| 3VL |
High Performance MCCB |
7. Siemens SITOP Power Supplies
| Series |
Description |
| SITOP smart |
Basic Industrial PSU |
| SITOP standard |
Standard PSU |
| SITOP premium |
High-end PSU |
| SITOP PSU8600 |
Intelligent Power Supply |
8. Siemens Industrial Ethernet Switches
| Series |
Description |
| XB005 |
Unmanaged Switch |
| XB100 |
Entry-Level Managed Switch |
| XB200 |
Managed Switch |
| XC300 |
Layer 3 Managed Switch |
| XR500 |
Core Industrial Switch |
9. Siemens Motion Control and Drives
Servo Systems
| Series |
Description |
| V90 |
Basic Servo |
| S120 |
High Performance Servo |
Variable Frequency Drives
| Series |
Description |
| V20 |
Compact Inverter |
| G120 |
Modular Inverter |
Motors
| Series |
Description |
| 1LE |
Low Voltage Motor |
10. Understanding Siemens Model Numbers
6ES7515-2AM01-0AB0
For example:
| Part |
Meaning |
| 6ES |
SIMATIC Automation |
| 7515 |
CPU1515 |
| 2 |
Product Version |
| AM01 |
Feature Code |
| 0AB0 |
Revision |
Conclusion
Understanding Siemens product families can significantly simplify product selection, troubleshooting, and system maintenance. From S7 PLCs and HMI panels to SITOP power supplies and SINAMICS drives, Siemens provides a complete automation ecosystem for industrial applications.
